Prince Harry has allegedly been told he cannot wearing military uniform at the final vigil marking Queen Elizabeth II's death.
This is despite Prince Andrew still being allowed, as a "special mark of respect" for his late mother.
But Harry has now had his say, and took the opportunity to say the row bears no relevance to his military career.
A spokesperson for the Duke said: “Prince Harry, The Duke of Sussex will wear a morning suit throughout events honouring his grandmother.
"His decade of military service is not determined by the uniform he wears and we respectfully ask that focus remain on the life and legacy of Her Majesty Queen Elizabeth II."
It comes as the country mourns its longest-serving monarch.
Queen Elizabeth II's lying in state in Westminster Hall opens to the public at 5pm on Wednesday and it will be open 24 hours a day until it closes at 6.30am on Monday September 19 – the day of the funeral.
Government guidance says there will be a queue which is expected to be very long.
People will need to stand for “many hours, possibly overnight”, with very little opportunity to sit down as the queue will be continuously moving.
As large crowds are expected, there are likely to be road closures and delays on public transport.
People will not be allowed to camp and will be given numbered wristbands to indicate their place in the queue so they are able to leave and come back, security staff said.
The last person to lie in state in the UK was the Queen Mother in 2002.
On top of her coffin in Westminster Hall was her coronation crown, set with the Koh-i-Noor diamond, and a hand-written message from her daughter, Queen Elizabeth II, reading: “In loving memory, Lilibet.”
An estimated 200,000 people turned out to pay their respects over three days.
Queen Elizabeth II's coffin
Murdo MacLeod/The Guardian
Prince Harry addressing mourners
PA